Yup, normal. I had the same pads on my LS400 setup and they SUCK pretty bad. Just one evening of spirited canyon driving and the pads could not handle it, they were literally smoking. Swapped them out for the EBC reds and never looked back. And the EBC ones sweep the entire area all the way up to the edges of the disc. The akebono pads are the only ones I've ever seen that don't cover the entire surface.
Senior Digital Content Administrator @ Edmunds Inc. www.edmunds.com
2000 Lexus SC400